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All Journal Jurnal Pendidikan Sains The Journal of Pure and Applied Chemistry Research Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Indonesian Journal of Chemistry

Anugrah Ricky Wijaya

Universitas Negeri Malang

Author-ID : 549218

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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Pengaruh Praktikum Inkuiri Terbimbing terhadap Kemampuan Berpikir Kritis Siswa dengan Kemampuan Awal Berbeda Rachmawaty, Dhinarty Umi; Wijaya, Anugrah Ricky; Dasna, I Wayan
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 6, No 7: JULI 2021
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v6i7.14632

Abstract: Laboratory-based learning is learning that aims to develop an understanding of scientific content, problem-solving skills, science skills and understanding. This study aims to determine the effect of guided inquiry laboratory on critical thinking skills in terms of students' initial abilities in the material reaction rate. The research design used was a quasi experimental posttest. Sampling using cluster random sampling technique is the students of class XI semester 1 one of the public high schools in Malang City. Hypothesis testing used two-way ANOVA with SPSS 22 for windows. The results showed that there was an interaction between the learning strategy and the prior knowledge of students' critical thinking skills.Abstrak: Pembelajaran berbasis praktikum merupakan pembelajaran yang bertujuan mengembangkan pemahaman konsep kimia, ketrampilan pemecahan masalah, ketrampilan dan pemahaman sains. Penelitian ini bertujuan untuk mengetahui pengaruh praktikum inkuiri tebimbing terhadap kemampuan berpikir kritis ditinjau dari kemampuan awal siswa pada materi laju reaksi. Rancangan penelitian yang digunakan adalah quasi eksperimental posttest. Pengambilan sampel menggunakan teknik cluster random sampling adalah siswa kelas XI semester 1 salah satu SMA Negeri di Kota Malang. Hasil penelitian menunjukkan terdapat perbedaan kemampuan berpikir kritis siswa yang dibelajarkan dengan parktikum inkuiri terbimbing dan siswa yang dibelajarkan dengan praktikum verifikatif. Terdapat interaksi antara strategi pembelajaran dengan kemampuan awal terhadap kemampuan berpikir kritis siswa.

Surface Behavior of Rhodamin and Tartrazine on Silica-Cellulose Sol-Gel Surfaces by Thin Layer Elution Surjani Wonorahardjo; Anugrah Ricky Wijaya; Suharti Suharti
The Journal of Pure and Applied Chemistry Research Vol 5, No 2 (2016)
Publisher : Chemistry Department, The University of Brawijaya

Physical and chemical interactions are the principles for different types of separation systems as the equillibrium dynamics on surface plays a key-role. Surface modification is a way for selective separation at interfaces. Moreover, synthesis of gel silica by a sol-gel method is preferred due to the homogeneity and surface feature easily controlled. Cellulose can be added in situ to modified the silica features during the process. Further application for to study interaction of rhodamin and tartrazine in its surface and their solubilities in mobile phase explains the possibility for their separation. This paper devoted to evaluate the surface behavior in term of adsorption and desorption of tartrazine and rhodamin on silica-cellulose thin layer in different mobile phase. Some carrier liquids applied such as methanol, acetone, n-hexane and chloroform. The result proves tartrazine and rhodamin is separated and have different behavior in different mobile phase. The retardation factors (Rf) of the mixtures suggest complexity behavior on silica-cellulose surface.

The Effect of Project Based Learning (PjBL) Learning Model on Students' Science Process Skills on Colloidal Topic Nurbani Jusuf; Anugrah Ricky Wijaya; I Wayan Dasna
Jurnal Pendidikan Sains Vol 9, No 3: September 2021
Publisher : Pascasarjana Universitas Negeri Malang (UM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jps.v9i3.15096

Abstract: This research focuses on applying the project-based learning model in teaching chemistry by using local wisdom in the ternate area. This study is to examine differences in science process skills of students who are taught with project-based learning models and students who are taught with conventional models on colloidal material in terms of achievement motivation, using quasi-experimental design designs (posttest only group). The sample in this study was conducted in one of the MAN in Ternate City. The results of the study show that there are significant differences in science process skills and student achievement motivation using project-based learning in the experimental class and conventional learning in the control class.Abstrak: Penelitian ini berfokus pada penerapan model pembelajaran berbasis proyek dalam pengajaran kimia dengan menggunakan kearifan lokal di daerah ternate dan menguji perbedaan keterampilan proses sains siswa yang dibelajarkan dengan model pembelajaran project based learning dan siswa yang dibelajarkan dengan model konvensional pada materi koloid yang ditinjau dari motivasi berprestasi, dengan menggunakan desain rancangan eksperimental semu (posttest only grup). Sampel dalam penelitian ini dilakukan di salah satu MAN di Kota Ternate. Hasil penelitian menunjukkan bahwa ada perbedaan yang signifikan pada keterampilan proses sains dan motivasi berprestasi siswa menggunakan pembelajaran berbasis proyek untuk kelas eksprimen dan pembelajaran konvensional di kelas kontrol

Pengaruh Praktikum Inkuiri Terbimbing terhadap Kemampuan Berpikir Kritis Siswa dengan Kemampuan Awal Berbeda Dhinarty Umi Rachmawaty; Anugrah Ricky Wijaya; I Wayan Dasna
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 6, No 7: JULI 2021
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v6i7.14911

Abstract: Laboratory-based learning is learning that aims to develop an understanding of scientific content, problem-solving skills, science skills and understanding. This study aims to determine the effect of guided inquiry laboratory on critical thinking skills in terms of students' initial abilities in the material reaction rate. The research design used was a quasi-experimental posttest. Sampling using cluster random sampling technique is the students of class XI semester 1 one of the public high schools in Malang City. Hypothesis testing used two-way ANOVA with SPSS 22 for windows. The results showed that there was an interaction between the learning strategy and the prior knowledge of students' critical thinking skills.Abstrak: Pembelajaran berbasis praktikum merupakan pembelajaran yang bertujuan mengembangkan pemahaman konsep kimia, keterampilan pemecahan masalah, ketrampilan dan pemahaman sains. Penelitian ini bertujuan untuk mengetahui pengaruh praktikum inkuiri terbimbing terhadap kemampuan berpikir kritis ditinjau dari kemampuan awal siswa pada materi laju reaksi. Rancangan penelitian yang digunakan adalah quasi experimental posttest. Pengambilan sampel menggunakan teknik cluster random sampling adalah siswa kelas XI semester I salah satu SMA Negeri di Kota Malang. Hasil penelitian menunjukkan terdapat perbedaan kemampuan berpikir kritis siswa yang dibelajarkan dengan parktikum inkuiri terbimbing dan siswa yang dibelajarkan dengan praktikum verifikatif. Terdapat interaksi antara strategi pembelajaran dengan kemampuan awal terhadap kemampuan berpikir kritis siswa.

Pengaruh Model Daur Belajar 5 Fase terhadap Keterampilan Proses Sains Siswa pada Materi Termokimia Wulan Ratia Ratulangi; Endang Budiasih; Anugrah Ricky Wijaya
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 5, No 9: SEPTEMBER 2020
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v5i9.14008

Abstract: This study aims to determine the differences in the 5-Phase Learning Cycle model and the conventional learning model of students' science process skills on thermochemical materials. This type of research is quasi-experimental. Sampling using random sampling techniques and obtained two sample classes, namely Class XI MIPA 6B3 as an experimental class and XI MIPA 6C3 as a control class at SMAN 10 Malang in the academic year 2017/2018. Collecting data using the science process skill observation instrument sheet. The results showed that there were differences in science process skills between students who were taught with the 5 Phase Learning Cycle model and conventional learning models on thermochemical materials.Abstrak: Penelitian ini bertujuan untuk mengetahui perbedaan model Daur Belajar 5 Fase dan model pembelajaran konvensional terhadap keterampilan proses sains siswa pada materi termokimia. Jenis penelitian ini adalah eksperimen semu. Pengambilan sampel menggunakan teknik random sampling dan diperoleh dua kelas sampel, yaitu Kelas XI MIPA 6B3 sebagai kelas eksperimen dan XI MIPA 6C3 sebagai kelas kontrol di SMAN 10 Malang tahun ajaran 2017/2018. Pengumpulan data menggunakan instrumen lembar observasi keterampilan proses sains. Hasil penelitian menunjukkan bahwa ada perbedaan keterampilan proses sains antara siswa yang dibelajarkan dengan model Daur Belajar lima Fase dengan model pembelajaran konvensional pada materi termokimia.

The development of Hand Sanitizer (HS) Production with Synthetic and Natural Scent Ingredients Anugrah Ricky Wijaya; Irma Kartika Kusumaningrum; Daratu Kusuma Eviana Putri; Bayu Kreshna Adhitya Sumarto; Abdillah Al Farraby; Yusron Risqy Maulana; Puspa Rahmadina Lestari
J-PEK (Jurnal Pembelajaran Kimia) Vol 6, No 2 (2021): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v6i22021p109

The effort of developed hand sanitisers (HS) production is needed in the era of the Covid-19 pandemic. The improvement of HS in terms of colour, aroma sharpness, and hand comfort is very important in the consideration of users choosing the HS product used. The socialisation of this service aims to report community service in creating HS production on a scale of 6 L/30 minutes using Propeller Mixing Hand Sanitizer (PMHS) by testing color, aroma, and hand comfort using synthetic and natural materials with chemical technology processes. The addition of the aroma of natural ingredients from fruit, flowers or seeds using maceration techniques from strawberry fruit, jasmine flowers, green tea leaves, and coffee grounds were extracted by the natural aroma liquid, which were added to HS products. The addition of HS products with the aroma of natural ingredients from strawberry, jasmine, green tea, and coffee was compared to the synthetic aromas of strawberry, jasmine, green tea, and coffee obtained from perfume shops. The questionnaire test of 44 respondents consisting of lecturers, staff, administration, and students for HS products evaluated color, aroma sharpness, and hand comfort. The results show that the colour, sharpness of the aroma and a sense of comfort in the hands of HS products with synthetic aromas of jasmine and green tea are highly favoured by users. These results were recommended as a reference for the manufacture and distribution of HS aromas of jasmine and green tea on a large scale.REFERENCESKualitas Gel Pembersih Tangan (Handsanitizer) Dari Ekstrak Batang Pisang Dengan Penambahan Alkohol, Triklosan Dan Gliserin Yang Berbeda Dosisnya.” Bioeksperimen 4(2):61–70.Anugrah Ricky Wijaya, Yudhi Utomo, Sumari, and Irma Kartika Kusumaningrum. “Pembuatan Hand Sanitizer Menggunakan PMHS (Propeller Mixing Hand Sanitizer).”HKI: 2019Diah JuliantariD, Ni Putu, Luh Putu Wrasiati, and Ni Made Wartini. 2018. “karakteristik ekstrak ampas kopi bubuk robusta (coffea canephora) pada perlakuan konsentrasi pelarut etanol dan suhu maserasi.” Jurnal rekayasa dan manajemen agroindustri 6(3):243. doi: 10.24843/JRMA.2018.v06.i03.p08.Golin, Andrew P., Dexter Choi, and Aziz Ghahary. 2020. “Hand Sanitisers: A Review of Ingredients, Mechanisms of Action, Modes of Delivery, and Efficacy against Coronaviruses.” American Journal of Infection Control 48(9):1062–67. doi: 10.1016/j.ajic.2020.06.182.Nazma Sabrina Sani, Rofiah Racchmawati dan Mahfud. 2012. “Pengambilan Minyak Atsiri Dari Melati Dengan Metode Enfleurasi Dan Ekstraksi Pelarut Menguap.” Jurnal Teknik Pomits 1(1):1–4.Riza Ibnu Fajar, Luh Putu Wrasiati*, Lutfi Suhendra. 2018. “kandungan senyawa flavonoid dan aktivitas antioksidan ekstrak teh hijau pada perlakuan suhu awal dan lama penyeduhan.” Jurnal Rekayasa Dan Manajemen Agroindustri 6(3):196–202.Septiani Mangiwa, Agnes Eri Maryuni. 2020. “Pengaruh Metode Ekstraksi Terhadap Sifat Fisik Dan Kimia Ekstrak Biji Kopi Sangrai Jenis Arabika (Arabica Coffea) Asal Wamena Dan Lanny Jaya.” AVOGADRO Jurnal Kimia 4(1):31–40.Shabri dan Dadan Rohdiana. 2016. “Optimasi Dan Karakterisasi Ekstrak Polifenol Teh Hijau Dari Berbagai Pelarut.” Jurnal Penelitian Teh Dan Kina 19(1):57–66.Sulusi Prabawati, Endang D. A., Suyanti, dan Dondy ASB. 2002. “Perbaikan Cara Ekstraksi Untuk MeningkatkanRendemen Dan Mutu Minyak Melati.” Jurnal Hortikultura 12(4):270–75.

Model QSAR dari Turunan 3- tersubstitusi 4-Anilino Kumarin terhadap Aktivitas Anti-kanker Pankreas Daratu Eviana Kusuma Putri; Harno Dwi Pranowo; Anugrah Ricky Wijaya; Aman Santoso
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 5, No 1 (2021)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Model Quantitative structure-activity relationship (QSAR) dari turunan 3-tersubstitusi 4-anilino kumarin terhadap aktivitasnya sebagai anti-kanker pankreas telah berhasil dibuat dan divalidasi. Struktur molekul turunan 3-tersubstitusi 4-anilino kumarin dan aktivitas biologisnya yang digunakan disitasi dari penelitian yang telah dilakukan oleh Luo dkk. (Luo et al., 2017). Setiap molekul turunan 3-tersubstitusi 4-anilino kumarin yang digunakan dioptimasi menggunakan metode kalkulasi DFT/BPV86 6-31G. Model analisis QSAR dibentuk menggunakan metode Multi Linear Regression (MLR) dan model terbaik yang didapatkan adalah: Log IC50 = 4,02 + (-7,126 x qC7) + (-5,709 x qC8) + (6,845 x qC18), n = 18; r2train = 0.701; r2test = 0.849, Fkal/Ftab = 3,269; SEE = 0.230.

The Effect of Temperature, Sulfonation, and PEG Addition on Physicochemical Characteristics of PVDF Membranes and Its Application on Hemodialysis Membrane Retno Ariadi Lusiana; Ayub Indra; Nor Basid Adiwibawa Prasetya; Nurwarrohman Andre Sasongko; Parsaoran Siahaan; Choiril Azmiyawati; Nanik Wijayanti; Anugrah Ricky Wijaya; Mohd Hafiz Dzarfan Othman
Indonesian Journal of Chemistry Vol 21, No 4 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.63740

Polyvinylidene fluoride (PVDF) membrane and its derivative have been investigated the permeation ability for creatinine and urea. The membrane was made by an inversion precipitation system in N,N-dimethyl acetamide (DMAc) and water as non-solvents. In this study, the modification of PVDF membrane permeability with PEG additives, CBT variations, and sulfonation was successfully carried out. The membrane solidification process was carried out on three variations of the coagulation bath temperature (CBT): 30, 45, and 60 °C. Eight types of membranes were characterized by using FT-IR and TGA/DSC, followed by the analysis of their porosity, hydrophilicity, water uptake, swelling degree, tensile strength, and permeability of creatinine and urea. The FT-IR spectra indicate that PVDF modification has been successfully carried out. The porosity, hydrophilicity, water uptake, and swelling degree values increase with the modification of functional groups. Furthermore, improvements in creatinine and urea permeability and clearances are achieved by increasing CBT and sulfonation in the PVDF/PEG membrane. The presence of sulfonate groups improves the membrane permeability through the interaction of intermolecular hydrogen with water and dialysate compounds. The existence of PEG as a porogen enhanced membrane porosity. Creatinine and urea clearance values increase from 0.29–0.58 and 6.38–20.63 mg/dL, respectively.

Isolasi dan Optimasi Transesterifikasi Minyak Biji Pepaya (Carica papaya) sebagai Sumber Energi Terbarukan Aman Santos; Farashinta Nadia; Rini Retnosari; Anugrah Ricky Wijaya; Sumari Sumari; Ihsan Budi Rachman
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 1 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

AbstrakLimbah biji pepaya Indonesia sebanyak 134.904,75 ton, mengandung minyak yang berpotensi ditransesterifikasi menjadi metal serta berpotensi sebagai biodiesel. Penelitian ini bertujuan untuk menentukan: (1) kondisi optimum sintesis biodiesel dengan dua tahapan reaksi, (2) karakter metil ester sintetis melalui transesterifikasi, dan (3) komponen metil ester sintetis serta potensinya sebagai biodiesel. Tahapan penelitian eksperimental laboratoris ini, yaitu: (1) ekstraksi minyak biji pepaya, (2) sintesis metil ester dari minyak biji pepaya, (3) karakterisasi metil ester sintetis dan uji potensi biodiesel meliputi penentuan densitas, viskositas, indeks bias, dan uji bilangan asam, dan (4) identifikasi komponen metil ester sintetis dengan GC-MS. Rendemen tertinggi metil ester sintetis diperoleh 75,82% b/b pada konsentrasi katalis KOH 1% b/b dengan karakteristik viskositas 4,76 cSt, massa jenis 0,85 g/mL, bilangan asam 0,70 mg KOH/g, dan indeks bias 1,44, maka metil ester sintetis telah memenuhi SNI 04-7182-2006 dan berpotensi sebagai biodiesel. Hasil uji GC-MS menunjukkan adanya metil palmitat 14,58%, metil oleat 78,87%, dan metil stearat 4,57%.

Optimasi pH dan Konsentrasi Elektrolit dalam Elektrokoagulasi Limbah Surfaktan Hanumi Oktiyani Rusdi; Surjani Wonorahardjo; Yudhi Utomo; Anugrah Ricky Wijaya
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 1 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Surfactants are organic materials that act as active ingredients in detergents, soaps and shampoos which can reduce the surface tension of the water so that the particles attached to the materials being washed are released and float or dissolved in water thus polluting the environment. Therefor it is necessary to separate or change them into other harmless materials before being discharged into the environment. One of the methods used is electrocoagulation. The electrocoagulation method is an environmentally friendly method of treating liquid waste by combining the principles of coagulation, flotation and electrochemistry. In this study, the electrocoagulation method was carried out by varying pH and electrolyte concentrations in the simulated surfactant waste treatment. Surfactant levels were determined by spectrophotometer in methylene blue. The optimization of the method is done by determining the maximum absorption length, optimum pH, and the effect of adding electrolytes with different concentrations. The results showed that the maximum absorption at a wavelength of 659 nm. The electrocoagulation process runs optimally at pH 2 with the addition of 7mM Na2SO4 electrolyte resulting in a% removal of 65%.

Co-Authors Abdillah Al Farraby Aman Santos Aman Santoso Ayub Indra Bayu Kreshna Adhitya Sumarto Choiril Azmiyawati Daratu Kusuma Eviana Putri Dhinarty Umi Rachmawaty Endang Budiasih Farashinta Nadia Hanumi Oktiyani Rusdi Harno Dwi Pranowo I Wayan Dasna Ihsan Budi Rachman Irma Kartika Kusumaningrum M Rizky Mohd Hafiz Dzarfan Othman Muhammad Roy Asrori Nanik Wijayanti Nor Basid Adiwibawa Prasetya Nurbani Jusuf Nurwarrohman Andre Sasongko Parsaoran Siahaan Puspa Rahmadina Lestari Rachmawaty, Dhinarty Umi Retno Ariadi Lusiana Retnosari, Rini Suharti Suharti Sumari Sumari Surjani Wonorahardjo Utomo, Yudhi Wulan Ratia Ratulangi Yusron Risqy Maulana

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